Back to 5D Series MODELS

The Models 5D64 and 5D64V are wide-range general-purpose instruments for conditioning the signal received from a DC-to-DC LVDT, potentiometer-type sensor, Hall-Effect device, photocell, current shunt, or other external DC voltage source.

The 5D64 delivers filtered analog output of ±5 VDC, while the 5D64V produces ±10 VDC.

For both models, the DC input may be either differential (floating) or grounded (single-ended).  Exceptional stability and accuracy over an unusually wide range of voltage input levels and grounding configurations are achieved through

	precisely regulated, remotely sensed excitation
	chopper-stabilized low-drift amplification
	configurable low-pass active filtering
	"absolute" and "two-point" software-based calibration
	effective signal isolation and ESD protection.

For both the Model 5D64V and the Model 5D64S (the "S" Option version of the Model 5D64), a 10-pin header for a Phoenix Style screw-terminal connector replaces the Model 5D64's standard DB25 connector for the module's power, configuration, logic, and analog output wiring.  Ensuring secure cable connections to individual 5D modules, these versions are intended primarily for single-point or single-mount module applications.  Since the logic "enable" line is not provided in this case, both analog outputs are continuously available for both the 5D64V and the 5D64S.

View / download complete Model 5D64/5D64V Instruction Manual

Differential Inputs and Generous Common-Mode Range Eliminate Ground-Coupling Errors Normally Associated with Off-Ground Signal Sources

A stable, remotely sensed excitation of ±5 VDC ± 0.02% is provided for DC-to-DC LVDT's, potentiometer-type sensors, and other transducers that may require it.  With an externally powered transducer, input isolation yields an operating common-mode range of up to 1500 V (when using the regulated excitation provided by the 5D64 or 5D64V module, see the table below).

For steady indication and smooth, dependable control action, the 5D64(V) can provide a true average value of the measured variable, even in the face of substantial dynamic content.  As with most 5D Series modules, two high-level, noise-free analog outputs are provided.  For the 5D64 (only), one output may be switched on and off by setting the logic state of an "enable" line.  For the 5D64V, both outputs are continuously available.

Both modules feature

	Powerful low-pass active filtering, independently selectable for each output, for removal of unwanted high-frequency measurement-signal components and the elimination of aliasing errors, if the module's output is subsequently sampled
	High input impedance on all ranges to eliminate cable resistance as a source of error (allowable cable length has virtually no practical limits)
	High noise rejection, eliminating errors from common-mode pickup and ground-loop coupling, with 1500 VAC isolation between input and output terminals and between I/O and power supply / communications terminals
	High ESD immunity and extensive EMI protection further assure data integrity in harsh industrial environments

Internal "Absolute" Calibration Ensures High Accuracies, Without Elaborate Trial and Error Procedures

To calibrate a 5D64(V), you need only use the Configurator software provided with the unit to specify the desired relationship between the module's measured engineering units and its ±5-VDC or ±10-VDC output, given the full-scale voltage range for which it is currently set.  If the received input is to represent an analog of some parameter other than voltage itself, you will also have to enter transducer sensitivity and range information.  A zero offset term may also be entered, expressed either in engineering units or millivolts. 

Conventional "two-point (deadweight)" calibration may be applied, if desired, to improve on the "absolute" calculations, when there are at least two independently and accurately known calibration points ("ZERO" and "SPAN").  Internal symmetry trimming is available for negative slope adjustments of up to ±2% of full scale, along with internal midscale linearity correction, both positive and negative.

Guaranteed "absolute" calibration accuracies for a properly configured 5D64(V)'s input ranges and excitation levels are given in the Specifications, below.  By virtue of the unusually high stability of the 5D64(V) instrument, even higher accuracies can be achieved with additional software-based "two-point" calibration.

Model 5D64(V) Specifications  [Top ] (Click here for 5D Series General Specifications)
Transducer Types	Virtually any transducer producing DC output, either externally powered or with power requirement of 10 V @ 80 mA or less.  The diagrams below show (a) 2-wire cabling for a general analog source that supplies its own excitation; (b) typical wiring for a DC-to-DC LVDT, using the 10-VDC excitation provided by the 5D64(V); and connections to an external potentiometer, both (c) 3-wire (for under 20 ft. in length) and (d) 5-wire (for 20 ft. or longer).
a.  General 2-Wire Cabling (external excitation) b.  4-Wire Cabling to DC-to-DC LVDT c.  3-Wire Potentiometer Cabling (under 20 ft. in length) d.  5-Wire Potentiometer Cabling (20 ft. or longer)
Input Ranges (Nominal, Full-Scale)	See table, below; selectable when the 5D64(V) is configured.  Accuracy is given as % of full-scale overall expected maximum error, following calibration.  Common-mode values shown in the table are only for the case where the 10-VDC excitation provided by the 5D64(V) is in use (see Common-Mode Range, below), and are given in ±VDC, maximum operating.  Note that the highest range selection accommodates actual inputs as high as 240 VDC.
Range (VDC, f.s.) Accuracy Common-Mode Range (V) 0.05 0.04 1 0.075 0.04 1 0.1 0.04 1 0.15 0.04 1 0.2 0.03 1 0.3 0.03 1 0.4 0.03 1 0.5 0.02 1 0.75 0.02 2 1 0.02 2 1.5 0.02 2 2 0.02 2 3 0.02 15 4 0.02 15 5 0.02 15 7.5 0.02 40 10 0.02 40 15 0.02 40 20 0.02 40 30 0.02 40 40 0.02 150 50 0.02 150 75 0.02 150 100 0.02 150 150 0.03 150
Excitation	Sensed 10 VDC (= ±5 VDC) ± 0.02% @ up to 80 mA
Accuracy	Dependent on range; see table, above
Amplifier
Common-Mode Range	±1500 V for externally powered transducers; when excitation is provided by the 5D64(V) module, see table, above
Input Impedance	Greater than 5 MΩ on all ranges
Offset	Initial: ±0.02% of full scale Vs. temperature: ±25 ppm/°C Vs. time: ±10 ppm/month
Gain Accuracy	±0.02% of full scale typical, following calibration; see table, above
Gain Stability	Vs. temperature: ±25 ppm/°C Vs. time: ±10 ppm/month
Analog Filters	0.2, 2, 20, 200, or 2000 Hz, independently selectable for each output
Analog Outputs	Filtered ± 0 to 5 VDC (for the Models 5D64 and 5D64S) or ± 0 to 10 VDC (for the Model 5D64V), with linearity maintained for 20% overrange.  For the Model 5D64 (only), Output B is switchable via logic "Enable" line.
Logic-Input Function    (see also General 5D Specs)	Enable The following diagrams show 5D64 logic input connections for switch closure (no external supply) and active TTL logic, respectively, using the standard module DB25 connector.  For the "Enable" function, see 5D Analog Outputs and the description of the MODULE IDENTIFICATION (MID) command. NOTE: For the Models 5D64V and 5D64S, the Enable function is not provided, and both analog outputs are continuously available.